There is a pen and a book in my bag.是不是be动词只要跟后面跟的第一个匹配就可以了,我问别人有人说分多种情况来说不知该相信哪一位了。如果是What are these?是不是就应该是They are a pen and a pencil.

There is a pen and a pencil 还是There are a pen and a pencil This is a pen,and ____is a pencil over there there _ a pen and abook A.is B.are There is ( ) “P,( )“E”and ( )N in pen.(a/an) There is a little ink in his pen and little ink in her pen.Whose pen do you borrow? there is a pen 对a 提问 There is a pen and 2 pencils in the pencil-box.(就a pen and 2 pencils 提问） there two pencils,a pen,a rubber and a knife in it.And there is a long ruler 可以说There is a pen here吗 There is a pen.的问句 There ___ a pen and two pencils on the desk.用is还是are~There ___ a pen and two pencils on the desk.用is还是are~ There is a pen and three apples on the desk.为什么用is不用are? there is a pen and some rubbers on the table.这里应该用is还是are? There is a book and a pen on the table改为复数句 There is a book and a pen on the desk.(变为否定句) What ________in my pencil-box?There is a pencil,a pen and an easer in it. is there a pen and some books on the desk?肯定回答是yes,there is 还是yes there are there is a pen and two books on the desk.还是there are a pen and two books on the desk?对这语法不懂,急用!